Folding hay-derrick.



(Application filed Mar. 10, 1990.1

(No Modal.)

m @eZ/M llirnn STATES PATENT irren.

DAVID H. CLARK, CF CATLIN, INDIANA.

FoLDlNe. HAY-D'ERRICK.

SPECIFICATION forming part of Letters Patent No. 656,941, dated August 2S, 1900. Application filed March 10, 1900. Serial No, 8,243. (N0 mOdGlJ To @ZZ whom t may concern.-

Beit known that I, DAVID H. CLARK, a citi- Zen of the United States, residing at Catlin, in the county of Parke and State of Indiana, have'invented certain new and useful Improvements in Folding Hay Derricks, of which the following is a specification.

The object of the invention is to overcome the difficulty of moving, adjusting, and repairing the hay-derrick that is now in use. Being constructed as they are they are very high and top-heavy, making them easy to upset or turn over, and having no way convenient to lower the derrick it is very inconvenient to adjust the ropes and pulleys. The purpose of my invention is to overcome these difficulties.

Referring to the drawing, A A designate the longitudinal base or foundation beams, each of which is about three inches bytwelve inches by fourteen feet in dimension.

B B are cross-bars of foundation and are about two inches by twelve inches by eight feet and 'are fastened to A A, as shown in drawing, with square-head bolts, with tap let in A A to receive bolts. 4

C C, the uprights of frame, three inches by six inches by ten feet, are bolted to A A at an angle to correspond with an upright position of the post G. v

D, the cross-beam, is about three inches by eight inches by eight feet,with gains cut four inches from each end, one-half inch deep and three inches wide. This is bolted to the top of uprights C C with square-head bolts, with taps let in, as described in A A.

E E, the guides, about three inches by four inches by seven feet, are bolted at one end to cross-bar B, bolts passing up through cross-bar guides and hinges at foot of braces H H. Guides are fastened at opposite ends with bolts or screws, with a four-inch block under the end to make the space for end of roller F.

F, the roller, is about six inches by six inches by eight feet. l

G, the post of crane or derrick, is about seven inches square (ora round pole equal in size) and twenty feet long. The bottom end of G is kept in place by an iron pin in the usual way. A place on the post is rounded about ten feet from bottom to receive yoke .I. To thc top end of G is bolted castings M M, with projections, as shown in drawing.`

l-I H, the braces, about three inches by four inches, are bolted to strap hinges at bottom and to C C at top, as shown.

I I, braces, four inches by four inches, are bolted at bottom to roller F and at top to yoke or collar J.

J, the yoke, is made of two pieces about three inches thick, ten inches wide, and two feet long, bolted together and a hole cut for post G to turn in. 1When derrick is raised, this yoke is bolted to cross-beam D.

K K, the sides of the ladder, are about three inches by four inches and are fastened at lower end to B with strap hinges and bolted at top to cross-beam D.

L, the cross-bar or crane-arm of derrick, is about six inches by six inches by twenty-five feet (or a pole corresponding in size) and is supported by castings M M, which are bolted to top of post G, and is stayed by braces N N, one and one-half inches byfive inches, to post G, as shown in drawing.

M M are castings, as described; N N7 braces, as described.

O, the windlass, is made of iron r'od, as shown in drawing, and is fastened to ladder with boxing or staples.

To operate the derrick, place end or side of sled or foundation of derrick to the stack or rick bottom, then to a rope passing through a pulley fastened to cross-bar of sled B in center at end from stack, then through pulleys at each end of crane-arm L, then fasten a hayfork at top, and hitch horse at bottom. With a rope fastened to top end of derrick let the man on load of hay at end of stack draw crane to hirn and place fork in hay. Start horse and the derrick will lift hay from wagon (or ground) and swing to center of stack or rick.

To change the device from its folded position to operative position, first raise crossbeam D and ladder to a position to bolt top of ladder to cross-beam, then raise braces I-I H and bolt to C C, remove pins in guides that hold roller F to end of base, then pass rope from windlass over the cross-beam D and fasten to roller F, (in center.) Turning the windlass will bring roller to opposite end of guides, Place pins in guides to hold roller F in position, bring crane in position to fasten braces N N to post G, as shown, change rope from roller to a place on post G just above the yoke J and turn the Windlass, which will raise derrick to an upright position, bolt yoke J to cross-beam D, and the device is in position for operation. operative to folded position, fastengrope from windlass to a place on post G just above yoke J, remove bolts that fasten yoke J to crossbeam D, then with the Windlass let derrick down till it rests on base, fold crane, remove pins in guides at ends of roller F, and turn Windlass to draw roller to opposite end of guides, put pins in place at ends of roller, then remove bolts in top of braces H I-I and let them down, remove bolts in top of ladder, and let ladder and cross-beam D down on base.

What I desire to claim and secure by Letters Patent is l. A derrick consisting of a base, a frame mounted on said base and having a ladder secured thereto, guide-bars secured to said base, a post 4having a roller at its base movable in said guides a crane-arm on said post To change the device from and suitablepulleys and ropes secured to said arm and frame for hoisting a load.

2. A derrick having a foundation, a frame having braces hinged tosaid foundation, a post rotatable in said frame, guide-bars on said foundation a roller movable in said guide- Ways and a ladder hinged to said foundation and secured to across-bar on said frame.

3. A derrick having a foundation consist- DAVID l-I. CLARK.

Witnesses:

JOHN M. BOATMAN, EDD ADAMs. 

